With over 25,000 files,  THE  CALIFORNIA  PATCH  BOOK

is the most comprehensive database on California law enforcement      emblems in the world!   

The embroidered emblem history of each agency in the State of California is available for reference, and is now optimized for use on the newest generation media players like the Apple iPod.  Click inside our site using the links at the top of this page to find out more about law enforcement history preserved!